<page-header [action]="phActionTpl">
  <ng-template #phActionTpl> </ng-template>
</page-header>
<nz-card>
  <st #st [data]="records" [columns]="columns" [page]="pagination" [expand]="expand" expandRowByClick>
    <ng-template #expand let-item let-index="index" let-column="column">
      <st #stItem [data]="item.instance" [columns]="itemColumns" [page]="pagination"></st>
    </ng-template>
  </st>
</nz-card>
